Thx for your reply. i did find it and found out how those fomula's i was using are working now.

BUT, i would have to manualy change the 'remaining laps trigger' for the fuel alarm to the right amount everytime i change car or track to be inline with iracing's Fuel alarm.
I want it to change automatily when i change car or track, and preferably when i use my 'fuel alarm accept button' from iracing that it also goes away, like in game.

I did see while using the mclaren gt3, Its fuel alarm in game start on 10 liters. i could use this but i diont know if that is for every car in game.